Harry s



Patented Oct. 4, I898.

H. S.-ROS$.

BELL BINGING MECHANISM.

(Application filed Sept 28, 1897) Hamyfilioss.

No. 6l|,794.

(No Model.)

no wnS nms vzrzns ca. rumour UNITED STATES PATENT QFFIGE.

HARRY S. ROSS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO \VILLIAMCAMPBELL, F SAME PLACE.

BELL-RINGING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 611,794, dated October4, 1898. Application filed September 28,1897. Serial No. 653,354. (Nomodel.)

State of Illinois, have in vented a new and use-' ful Alarm-Bell, ofwhich the following is a specification.

My invention is in the nature of an alarmbell to be used in any positionwhere alarmbells, either mechanical or electrical, can be utilized.

The object of my invention is to provide a mechanically-operatedalarm-bell of cheap and simple construction to take the place ofelectric bells in various positions, whereby the trouble and annoyanceof attending to the battery and connections of electric bells will bedispensed with.

My invention consists in the improved construction, arrangement, andcombination of parts hereinafter fully described and afterwardspecifically pointed out in the claim.

In order to enable others skilled in theart to which my invention mostnearly appertains to make and use the same, I will now proceed todescribe its construction and operation, reference being had totheac'company ing drawings, forming part of this specifica tion, inwhich Figure 1 is a horizontal transverse section through the centralshaft of the bell,the

gong being omitted. Fig. 2 is a vertical sec-' tion on the line 2 2 ofFig. 1, the gong also being shown. Fig. 3 is a bottom plan view of thegong detached. Fig. 4.- is a detail view illustrating the manner ofguiding the operating-rod. Fig.5 is a detail sectional view to bereferred to hereinafter.

Like letters of reference mark the same parts wherever they occur in thedifferent figures of the drawings.

Referring to the drawings by letters, A is the base, upon which ismounted an upright shaft 13, upon which is threaded a gong O. Theupright shaft is provided just above the base with a toothed wheel D, ofany ordinary construction, upon the upper part of which is secured adiametrically-placed rod E. Balls F are attached to the ends of the rodE by means of spiral springs G. A second short shaft H is also mountedin the base A to one side of the main shaft, a cog-wheel I being securedupon the upper end of said shaft and-a pinion J being 'also secured tosaid shaft below the cog-wheel I. A rod K is passed through a staple orguide L, secured to the base A, and is further guided by means of a pinM, projecting through a longitudinal slot N in said rod. The rod K isformed on one side of its inner portion with rack-teeth O, and isprovided with a spring P, which maybe arranged to hold it normally ineither its inner or outer position, as may be desired. The rack-teeth Oof the rod K engage with the teeth of the pinion J on the shaft H, whilethe teeth of the cog-wheel I of the same shaft engage-with the teeth ofthe pinion D on the central shaft B. One or more inner projections Q arecast upon the inside of the gong in the track of the balls F whenrotated. The rod. K is provided with a suitable handle R on its outerend;

The operation of my invention may be described as follows: The basebeing secured in any desired position and the parts assembled. ashereinbefore described, the movement of the rod K either in or out,according to the adjustment of the spring Rwill, through the engagementof its teeth 0 with the teeth of the pinion J, cause the shaft H andgear- Wheel I to be rotated. The teeth of the gearwheel I, engaging withthe teeth of the pinion D, will cause the pinion to be rotated on theshaft 13 and carry the arm E around with it. During the revolution ofthis arm the balls F will strike against the projection Q of the gongand sound two strokes for every revolution of the bar E. The arrangementof the gearing as herein described will cause the pinion D and bar E torotate many times during a single revolution of the shaft H, which willcause a continuous repetition of strokes of the bell. ment the spring Pwill be adjusted to normally hold the bar K inits outward position, sothat by pressure inward, as before stated, a continuous striking of thebell will be caused, and when the arm K has been pushed to its inmostposition the spring will return it to its outermostposition, causing thesame number of strokes to be made in the opposite direction.

The spiral-spring connection between the As a preferable arrange- I armE and the balls will permit the balls to slide over the projection Q inpassing it, and

the centrifugal force due to the revolution of the balls will stretchthe springs and thus insure the revolution of the balls in an orbitsufficiently extensive to insure their contact with the projection Q ateach revolution.

From the foregoing description it will be obvious that I have produced acheap and simple mechanism which will be very effective for the intendedpurpose and which may be used for street-cars, police-patrols, firedepartments, house-doors, bicycles, and in any other position in which arepetition of strokes of the bell is desired.

My improved alarm-bell will take the place in many instances of anelectric-bell outfit, being equally effective and much less troublesometo manage.

Vhile I have illustrated and described the best means now known to mefor carrying out my invention, I do not wish to be understood asrestricting myself to the exact details of construction shown anddescribed, but hold that any slight changes or variations, such as mightsuggest themselves to the ordinary mechanie,wou1d properly fall Withinthe limit and scope of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

The herein-described alarm-bell consisting of the base A having staplesL secured therein, the central shaft B mounted in the base, the gong Omounted on shaft 13 and having inner projection Q, the cross-bar Ejournaled on shaft B and carrying pinion D, the spiral springs G on theends of the cross-bar in line therewith, the balls F on the outer endsof the springs, the shaft H mounted in the base, the gear-wheel Imounted thereon engaging pinion D and carrying pinion J, the rack-bar Kmounted in staples L and longitudinally slotted, its teeth engagingpinion J, pin M working in the slot, and the spring P normally pressingthe rack-bar outwardly, substantially as described.

HARRY S. ROSS.

W'itnesses:

THOMAS NOLAN, THOMAS MURRAY.

